WIST is your partner in paper research, development and contract services
Our staff is experienced and ready to perform the work needed to advance your project. Count on WIST for:
- raw material and/or chemical additive studies
- equipment evaluation
- grade development
- production runs
We work with the pilot paper machine at UW-Stevens Point. This Fourdrinier machine has a 20-inch web, runs at speeds up to 200 fpm, and produces a sheet in basis weight from 15 to 400 gsm. Chemicals can be metered in at seven locations in the approach flow system; the pre-fan pump port is a co-mix port that can meter in two chemicals. The wet end includes a dandy roll, single-felted two-nip press and a smoothing press. The dry end features two independent dryer sections, a horizontal size press and calender stack. The stock preparation area features a hydropulper, two-stage cleaner system, slotted pressure screen and automated temperature control. In short, this machine is ready for your project needs.
To inquire about paper making, physical testing services, pulping and bleaching, recyclability and repulpability, coating and laminating services for your operation, contact either:
Lindsey Hoffman, Laboratory and Papermaking Project Specialist
Brian Bandow, Paper Machine and Laboratory Specialist
Pulping and Bleaching
WIST performs trials for wood and non-wood biomass, including food-processing byproducts and agricultural residual materials.
Benchtop equipment is sized 50-360 grams dry product weight; tank volume pulping and bleaching tests are completed in 5-liter, 10-liter and 100-liter vessels. WIST's quantum mixer allows bleaching experiments with chlorine dioxide, hydrogen peroxide and ozone.